Formation of β-Phenylglucoside in Plant Leaves.

Detoxication of Phenol in Annual Plant Seedlings

“…Penetrating through the roots of some annual plant seedings, phenol is not subjected to glycosylation, but is coupled with low-molecular-weight peptides, forming phenol-peptide conjugates (Chrikishvili et al, 1977;Ugrekhelidze et al, 1983). On the other hand, it has been found, that phenol--glucoside is formed in barley or wheat leaves supplied by phenol in trace amounts (Nystrom et al, 1959).…”

Detoxication Mechanism of Exogenous Monatomic Phenols in Pea Seedlings

“…Similar data also were obtained for phenolic alcohol}saligenin: in broadbean (Pridham, 1958) and in Datura innoxia suspension cultures (Tabata et al, 1976) the alcohol hydroxyl group of saligenin is subject to glucosylation, and the glucosylation of a phenolic hydroxyl group does not take place, or the corresponding phenol glucoside is formed in trace amounts. The same trace amount of phenol--glucoside was produced when barley or wheat leaves were fed phenol (Nystrom et al, 1959). Analyzing the existing data on this problem it is possible to conclude that glycosylation of the exogenous monatomic phenols in higher plants does not occur or occurs to an insigni"cant degree.…”

“…According to the existing data, in plants exogenous phenol will form conjugates with glucose and with low-molecular-weight peptides. It has been found that phenol--glucoside is formed from exogenous phenol in barley and wheat leaves (Nystrom et al, 1959). In germinated mung bean seeds the enzyme transferring D-glucose from uridine diphosphoglucose to phenol has been discovered (Storm and Hassid, 1974).…”

BIOSYNTHESIS OF PUNGENIN FROM C14-LABELLED COMPOUNDS BY COLORADO SPRUCE

“…The data in Table VI support the vielr~ tliat it occurs after synthesis of the aglycone is complete, presun~ably by a traiisglucosylatioi~ reaction with uridiile diphosphate glucose (1 1). It sho~ild be remembered, however, that phenols iiitrod~~cecl into plant tissues often form glucosicles which do not occur n a t~~r a l l y (17,27,34,37). The formation of pungenin from its aglycone shows that this may be the ilatural path of biosynthesis, but it is still quite possible that glycosylation occurs a t a different stage under natural conditions.…”